Hi Avi.
On Sunday, 26 July 2009 14:31:57 +0300,
Avi Kivity wrote:
> >I have an installation with Ubuntu Hardy Heron server amd64 with KVM-62
> >from Ubuntu repositories installed on an HP Proliant DL380 G5 with two
> >Xeon E5405 quadcore processors and 16 GiB of RAM which has six VMs with
> >the following configuration of memory:
> >
> >Hostname | RAM
> >===============+===============
> >Ganimedes | 2 GiB
> >Os | 1 GiB
> >Aprender | 2 GiB
> >Aps0 | 2 GiB
> >Aps2 | 4 GiB
> >Ratatoskr | 4 GiB
> >===============+===============
> >TOTAL | 15 GiB
> >
> >
> >Initially the host was created with a swap partition of 1 GiB (more 1
> >GiB than was free for use of host) but this amount with the time
> >remained short and I had to add a LV of 7 GiB to be used with swap,
> >being now a total of 8 GiB of swap of which at this moment I have only a
> >9% free. Is 'normal' this use of memory?
> >
> >root@ss02:~# ps -e --sort -rss -Ho user,start_time,pid,pcpu,pmem,rss,size,vsz,args
> >USER START PID %CPU %MEM RSS SZ VSZ COMMAND
> >[...]
> >root Jul06 27471 52.3 24.4 4023232 4292200 4350296 kvm<ratatoskr>
> >root Jul24 9955 137 23.8 3923620 4308592 4350308 kvm<aps2>
> >root Jul06 8751 5.8 8.3 1368228 2171808 2229888 kvm<aps0>
> >root Jul07 8565 2.7 5.2 862844 2204704 2246416 kvm<aprender>
> >root Apr22 7842 0.6 3.6 600072 2172056 2230136 kvm<ganimedes>
> >root Jul01 7944 0.6 2.0 334860 1119916 1177996 kvm<os>
> >
> >root@ss02:~# free
> > total used free shared buffers cached
> >Mem: 16463388 16377844 85544 0 894216 66328
> >-/+ buffers/cache: 15417300 1046088
> >Swap: 8319948 7621916 698032
> >
> >
> >Updating to KVM-84 or superior can improve this situation?
> What is the storage configuration? Are you using qcow2?
The host machine has 8 x 300 GiB SAS disk in RAID 5 by hardware (7 disks
with 1 spare) on 1 logicaldrive. The partitioning scheme of host is the
following one:
root@ss02:~# fdisk -l /dev/cciss/c0d0
Disk /dev/cciss/c0d0: 1799.7 GB, 1799797127168 bytes
255 heads, 63 sectors/track, 218812 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x000af3c3
Device Boot Start End Blocks Id System
/dev/cciss/c0d0p1 1 122 979933+ 82 Linux swap / Solaris
/dev/cciss/c0d0p2 * 123 1338 9767520 83 Linux
/dev/cciss/c0d0p3 1339 218812 1746859905 8e Linux LVM
I'm not using qcow2 files. The /dev/cciss/c0d0p3 partition is a physical
volume that maintains the logical volumes that are used for VM's disks:
root@ss02:~# pvs
PV VG Fmt Attr PSize PFree
/dev/cciss/c0d0p3 vm lvm2 a- 1,63T 1,13T
> What are the image logical and physical sizes?
The disks for the VMs have these sizes:
aprender-raiz vm -wi-ao 8,00G
aprender-space vm -wi-ao 20,00G
aps0-raiz vm -wi-ao 7,00G
aps0-space vm -wi-ao 10,00G
aps2-cache vm -wi-ao 20,00G
aps2-index vm -wi-ao 10,00G
aps2-raiz vm -wi-ao 7,00G
aps2-space vm -wi-ao 10,00G
ganimedes-raiz vm -wi-ao 5,00G
ganimedes-space vm -wi-ao 10,00G
os-disk vm -wi-ao 6,00G
os-mailbox vm -wi-ao 150,00G
os-space vm -wi-ao 10,00G
ratatoskr-raiz vm -wi-ao 8,00G
ratatoskr-space vm -wi-ao 200,00G
With respect to the internal partitioning scheme for each one of the
VMs, it is the following one:
* Aprender:
aprender:~# fdisk -l /dev/hda
Disk /dev/hda: 8589 MB, 8589934592 bytes
255 heads, 63 sectors/track, 1044 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/hda1 1 486 3903763+ 82 Linux swap / Solaris
/dev/hda2 487 1044 4482135 83 Linux
aprender:~#
aprender:~#
aprender:~# fdisk -l /dev/hdb
Disk /dev/hdb: 21.4 GB, 21474836480 bytes
255 heads, 63 sectors/track, 2610 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/hdb1 1 2610 20964793+ 83 Linux
* Aps0:
[root@aps:~]
$fdisk -l /dev/hda
Disco /dev/hda: 7516 MB, 7516192768 bytes
255 heads, 63 sectors/track, 913 cylinders
Units = cilindros of 16065 * 512 = 8225280 bytes
Disk identifier: 0x00039c2a
Disposit. Inicio Comienzo Fin Bloques Id Sistema
/dev/hda1 1 365 2931831 82 Linux swap / Solaris
/dev/hda2 366 913 4401810 83 Linux
[root@aps:~]
$
[root@aps:~]
$fdisk -l /dev/hdb
Disco /dev/hdb: 10.7 GB, 10737418240 bytes
255 heads, 63 sectors/track, 1305 cylinders
Units = cilindros of 16065 * 512 = 8225280 bytes
Disk identifier: 0x00087cc1
Disposit. Inicio Comienzo Fin Bloques Id Sistema
/dev/hdb1 1 1305 10482381 83 Linux
* Aps2
aps2:~# fdisk -l /dev/hda
Disco /dev/hda: 7516 MB, 7516192768 bytes
255 heads, 63 sectors/track, 913 cylinders
Units = cilindros of 16065 * 512 = 8225280 bytes
Disk identifier: 0x0004b793
Disposit. Inicio Comienzo Fin Bloques Id Sistema
/dev/hda1 1 365 2931831 82 Linux swap /
Solaris
/dev/hda2 366 913 4401810 83 Linux
aps2:~#
aps2:~#
aps2:~# fdisk -l /dev/hdb
Disco /dev/hdb: 10.7 GB, 10737418240 bytes
255 heads, 63 sectors/track, 1305 cylinders
Units = cilindros of 16065 * 512 = 8225280 bytes
Disk identifier: 0x0009491d
Disposit. Inicio Comienzo Fin Bloques Id Sistema
/dev/hdb1 1 1305 10482381 83 Linux
aps2:~#
aps2:~#
aps2:~# fdisk -l /dev/hdc
Disco /dev/hdc: 10.7 GB, 10737418240 bytes
255 heads, 63 sectors/track, 1305 cylinders
Units = cilindros of 16065 * 512 = 8225280 bytes
Disk identifier: 0x00000000
Disposit. Inicio Comienzo Fin Bloques Id Sistema
/dev/hdc1 1 1305 10482381 83 Linux
aps2:~#
aps2:~#
aps2:~# fdisk -l /dev/hdd
Disco /dev/hdd: 21.4 GB, 21474836480 bytes
255 heads, 63 sectors/track, 2610 cylinders
Units = cilindros of 16065 * 512 = 8225280 bytes
Disk identifier: 0x00000000
Disposit. Inicio Comienzo Fin Bloques Id Sistema
/dev/hdd1 1 2610 20964793+ 83 Linux
* Ganimedes:
[root@ganimedes:~]
$fdisk -l /dev/hda
Disco /dev/hda: 5368 MB, 5368709120 bytes
255 heads, 63 sectors/track, 652 cylinders
Units = cilindros of 16065 * 512 = 8225280 bytes
Disk identifier: 0x0002cad1
Disposit. Inicio Comienzo Fin Bloques Id Sistema
/dev/hda1 1 122 979933+ 82 Linux swap /
Solaris
/dev/hda2 123 652 4257225 83 Linux
[root@ganimedes:~]
$
[root@ganimedes:~]
$fdisk -l /dev/hdb
Disco /dev/hdb: 10.7 GB, 10737418240 bytes
255 heads, 63 sectors/track, 1305 cylinders
Units = cilindros of 16065 * 512 = 8225280 bytes
Disk identifier: 0x0007e07e
Disposit. Inicio Comienzo Fin Bloques Id Sistema
/dev/hdb1 1 1305 10482381 83 Linux
* Os:
os:~# fdisk -l /dev/hda
Disco /dev/hda: 6442 MB, 6442450944 bytes
255 heads, 63 sectors/track, 783 cylinders
Units = cilindros of 16065 * 512 = 8225280 bytes
Disk identifier: 0x000a78a9
Disposit. Inicio Comienzo Fin Bloques Id Sistema
/dev/hda1 1 243 1951866 82 Linux swap /
Solaris
/dev/hda2 244 783 4337550 83 Linux
os:~#
os:~#
os:~# fdisk -l /dev/hdb
Disco /dev/hdb: 10.7 GB, 10737418240 bytes
255 heads, 63 sectors/track, 1305 cylinders
Units = cilindros of 16065 * 512 = 8225280 bytes
Disk identifier: 0x000dffb2
Disposit. Inicio Comienzo Fin Bloques Id Sistema
/dev/hdb1 1 1305 10482381 83 Linux
os:~#
os:~#
os:~# fdisk -l /dev/hdc
Disco /dev/hdc: 161.0 GB, 161061273600 bytes
255 heads, 63 sectors/track, 19581 cylinders
Units = cilindros of 16065 * 512 = 8225280 bytes
Disk identifier: 0x90c7dc67
Disposit. Inicio Comienzo Fin Bloques Id Sistema
/dev/hdc1 1 19581 157284351 83 Linux
* Ratatosk:
ratatoskr:~# fdisk -l /dev/hda
Disk /dev/hda: 8589 MB, 8589934592 bytes
255 heads, 63 sectors/track, 1044 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/hda1 1 486 3903763+ 82 Linux swap /
Solaris
/dev/hda2 487 1044 4482135 83 Linux
ratatoskr:~#
ratatoskr:~#
ratatoskr:~# fdisk -l /dev/hdb
Disk /dev/hdb: 214.7 GB, 214748364800 bytes
255 heads, 63 sectors/track, 26108 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/hdb1 1 26108 209712478+ 83 Linux
> What is the host kernel (uname -a)?
root@ss02:~# uname -a
Linux ss02 2.6.24-19-server #1 SMP Wed Aug 20 18:43:06 UTC 2008 x86_64 GNU/Linux
Thanks for your reply.
Regards,
Daniel
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